PURPOSE: To obtain a general production method capable of industrially producing from a new intermediate a nitroguanidine derivative especially having a safe and advantageous property as an agricultural insect pest control agent, useful in the fields of medicines and agricultural chemicals.
CONSTITUTION: A new compound of formula I (A is 2-4C alkylene capable of having a substituent; G is O, S; L is electron-attracting group) or its salt us reacted with a compound of formula II [R1, R2 are H, hydrocarbon group capable of having a substituent; further R2 is (CH2)Y, NR1a, cyclic amino group; Y is cyclic hydrocarbon capable of having a substituent, 5 or 6-membered heterocyclic group (capable of having a substituent) containing one to three hetero atoms (N, 0, S); m is 1 or 2] its salt to obtain a compound of formula III or its salt. The compound of formula III or its salt is, if necessary, acylated when R1 is H, and subsequently reacted with a compound of formula IV (R3 is each group of R1a; R4 is each group of R2) or its salt to obtain a compound of formula V (R1 us R1a, acyl) or its salt.
MINAMIDA ISAO
